{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.lake","code":"thing-q23397","url":"https://ver.cy/models/thing/q23397/","name":"lake","alternateNames":["inundation","Sacred lake","balancing lake","hafir","bathing lake","Noor","oxbow lake","coastal lake","dry lake","intermittent lake","underground lake","floodplain lake"],"kind":"thing","status":"published","version":"0.2.0-wave.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.PLC"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A body of relatively still water occupying a basin on land, larger than a pond, natural or artificial, including sacred lakes, reservoirs and bathing lakes.","purpose":"Let an agent handle lakes by name, size, depth, water quality, uses, protection and safety.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Still water in a basin","Larger than a pond (definitions vary)","Natural or artificial","Can freeze, stratify and bloom with algae"],"structure":{"bundles":[{"id":"identity","name":"Identity","description":"Which lake.","layers":[{"id":"name","name":"Name","description":"Official name.","findings":[{"id":"name-finding","name":"Name","description":"Name and ids.","questions":[{"text":"What is the lake name and id?","kind":"provenance"},{"text":"Is it natural or artificial?","kind":"definition"}]}]},{"id":"size","name":"Size","description":"Area and depth.","findings":[{"id":"size-finding","name":"Size","description":"Size and depth.","questions":[{"text":"What are its area and depth?","kind":"measurement"},{"text":"From which survey?","kind":"provenance"}]}]}]},{"id":"water","name":"Water","description":"Quality and levels.","layers":[{"id":"quality","name":"Quality","description":"Bathing and ecology.","findings":[{"id":"quality-finding","name":"Quality","description":"Water quality.","questions":[{"text":"What is the current water quality?","kind":"measurement"},{"text":"Is there an algal bloom warning?","kind":"boundary"}]}]},{"id":"levels","name":"Levels","description":"Management.","findings":[{"id":"levels-finding","name":"Levels","description":"Water levels.","questions":[{"text":"How are levels managed?","kind":"definition"},{"text":"Is there drought or flood risk?","kind":"boundary"}]}]}]},{"id":"use","name":"Use","description":"Recreation and supply.","layers":[{"id":"recreation","name":"Recreation","description":"Swimming, boating.","findings":[{"id":"recreation-finding","name":"Recreation","description":"Recreation rules.","questions":[{"text":"Is swimming or boating allowed?","kind":"boundary"},{"text":"Which permits are needed?","kind":"boundary"}]}]},{"id":"supply","name":"Supply","description":"Drinking water.","findings":[{"id":"supply-finding","name":"Supply","description":"Water supply use.","questions":[{"text":"Is it a drinking water source?","kind":"definition"},{"text":"What restrictions apply?","kind":"boundary"}]}]}]},{"id":"safety-and-culture","name":"Safety and culture","description":"Risks and meaning.","layers":[{"id":"safety","name":"Safety","description":"Cold water and ice.","findings":[{"id":"safety-finding","name":"Safety","description":"Safety advice.","questions":[{"text":"What safety advice applies?","kind":"action"},{"text":"Is ice safe?","kind":"boundary"}]}]},{"id":"sacred","name":"Sacred status","description":"Cultural meaning.","findings":[{"id":"sacred-finding","name":"Sacred","description":"Cultural meaning.","questions":[{"text":"Is the lake sacred to local people?","kind":"boundary"},{"text":"Are there restrictions?","kind":"boundary"}]}]}]}]},"agentConduct":{"may":["Measure and report a lake's water level, temperature and quality.","Describe a lake from maps, public records and visible features.","Warn people about posted bathing bans, thin ice or algal blooms."],"mustNot":["Discharge waste, fuel or contaminated water into a lake.","Release fish, plants or other organisms that are not native to the lake.","Operate the outlet or dam of a reservoir without authority from its operator.","Disturb nesting birds or protected shoreline habitat.","Treat a sacred lake as an ordinary leisure site against the wishes of the community that holds it."],"requiresHuman":["Declaring a lake safe or unsafe for bathing or drinking water supply.","Changing the water level of a reservoir that people downstream depend on."]},"ethics":{"considerations":["Lakes are shared by people, wildlife and downstream users; pollution harms them all at once.","Some lakes are sacred, and their use must respect the communities that hold them."],"affectedParties":["People who drink, bathe or fish in it","Aquatic wildlife","Communities living downstream"]},"owners":{"steward":"The public or the landowner; water authorities regulate its use and reservoir operators control the dams.","roles":[],"masterSystems":["Water body registers kept by environmental agencies"]},"relations":[{"target":"Q2479431","type":"parent","note":"registry parent class"},{"target":"Q271669","type":"parent","note":"registry parent class"},{"target":"Q337567","type":"parent","note":"registry parent class"},{"target":"Q3391202","type":"parent","note":"registry parent class"},{"target":"body of water","type":"related","note":"standing water"},{"target":"landform","type":"related","note":"basin"},{"target":"water","type":"related","note":"supply"},{"target":"water law","type":"related","note":"rules"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.lake","Wikidata: Q23397 (https://www.wikidata.org/wiki/Q23397)","water body id: national or WFD code management","GeoNames id: numeric gazetteer"]},"properties":{"applicability":"required","items":["largest by area: about 371000 km2 - Caspian Sea, often classed as a lake","deepest: about 1642 m - Lake Baikal"]},"recognition":{"applicability":"required","items":["Enclosed standing water","Names on maps and gazetteers","Bathing water signs","An expanse of open still water surrounded by land."]},"capabilities":{"applicability":"required","items":["swim, boat and fish, where allowed","monitor water quality","protect habitats","manage water levels"]},"hazards":{"applicability":"required","items":["Drowning and cold water shock","Toxic algal blooms","Thin ice"]},"interfaces":{"applicability":"required","items":["EU Water Framework Directive","Bathing Water Directive","Local boating and fishing rules"]},"context":{"applicability":"required","items":["Lakes supply water, support ecosystems, fisheries and recreation.","tectonic, glacial and volcanic lakes","reservoirs","saline lakes","sacred lakes","artificial balancing and bathing lakes"]}},"sources":[{"title":"Wikidata item Q23397: lake","url":"https://www.wikidata.org/wiki/Q23397","note":"identity and sense of the item"},{"title":"Wikipedia: Lake","url":"https://en.wikipedia.org/wiki/Lake","note":"general description of the item"}],"openQuestions":["Should lakes be instances with water body ids?","How should size thresholds be defined?","How should sacred status be respected?"],"resources":{"spec":"/models/things/publications/thing-q23397/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q23397/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T06:19:07Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-06T19:51:57+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}